Right now I run multiple xboxes running XBMC to stream video content. I am only using an SD setup and I'm looking to upgrade all tvs in the house this year. I have read that the xbox is not powerful enough to handle hd content so those are not going to work out with the upgrade. I do have an IBM Netvista small form factor box that is a P4 2.53 machine with 1GB ram. It has Intel 845v graphics built in but I can upgrade the video with a PCI card. What do I need to do to have this box stream 720P content?